Home / 14,087.60-21,135-5,322.56

Finding the Fourth Proportional to 14,087.60, 21,135 and 5,322.56

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Solution

The fourth proportional to 14,087.60, 21,135 and 5,322.56 is: 7,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,087.60 : 21,135 = 5,322.56 : x
  2. Step 2: Convert to fraction form
    14,087.60/21,135 = 5,322.56/x
  3. Step 3: Cross multiply
    14,087.60x = 21,135 × 5,322.56
  4. Step 4: Simplify right side
    14,087.60x = 112,492,305.60
  5. Step 5: Solve for x
    x = 112,492,305.60/14,087.60
  6. Step 6: Final answer
    x = 7,985.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.